Server Utilization report (for processor) for business hour is incorrect

Hi,

We are using SCOM 2012 SP1 UR3 in our environment.

Recently got a query from one of the team that the processor utilization report is incorrect for business hours.

1. First I pulled a SCOM report (Performance by Utilization) for business hours say 1st Feb to 15th Feb processor.
2. Then I pulled a Raw report from SQL DW targetting % Processor time , exported it to excel & filtered it for the same duration which gave an average value of 86% for processor.
3. Finally, also pulled the same data from default report (Operating System Performance) under Windows Server 2008 Operating System which also gave me an average value of 86%.

To summarize Performance by Utilization  does not calculate the accurate business hours & needs to be corrected.